Digital cinema anti-piracy method and apparatus for liquid crystal projection systems

Abstract

Described herein are a method and apparatus including receiving digital video content, receiving an indication of an object of an image of the digital video content, receiving an indication of a grouping of the object in a frame sequence per second, swapping forward in time the grouping of the object with a time-following object to generate a first non-sequential frame of digital video content, performing an object assignment for the forward time swap, swapping backward in time the grouping of the object with a time-following object to generate a second non-sequential frame of digital video content and performing an object assignment for the backward time swap. The swapping backward in time and the swapping forward in time cause flicker in a recording of the digital video content.

The invention claimed is: 
     
       1. A method, said method comprising:
 receiving digital video content; 
 receiving an indication of an object of an image of said digital video content; 
 receiving an indication of a grouping of said object in a frame sequence, wherein said grouping of said object is one of lines or pixels or a combination of lines and pixels, and wherein said grouping of said object defines a horizontal and vertical position of said object within said image; 
 intra-frame swapping said grouping of said object with a grouping of a neighboring object, wherein said neighboring object is defined by a grouping of an object, and wherein said intra-frame swapping occurs in a forward direction with respect to time; 
 performing an object assignment for said forward time swap; 
 intra-frame swapping said grouping of said object with a grouping of a neighboring object, wherein said neighboring object is a grouping of an object, and wherein said intra-frame swapping occurs in a backward direction with respect to time; and 
 performing an object assignment for said backward time swap, wherein said forward time swap of objects occurs for half of a pre-determined time interval and said backward time swap occurs for half of said pre-determined time interval. 
 
     
     
       2. The method according to  claim 1 , further comprising storing each non-sequential generated frame of digital video content. 
     
     
       3. The method according to  claim 1 , wherein said forward time swap occurs for 0.5 seconds of a 1.0 second interval and said backward time swap occurs for 0.5 seconds of said 1.0 second interval and said forward time swapping and said backward time swapping continue for the duration of the digital video content. 
     
     
       4. The method according to  claim 1 , wherein said received digital video content is sequential. 
     
     
       5. The method according to  claim 1 , wherein said backward swapping in time and said forward swapping in time cause flicker in a recording of said digital video content. 
     
     
       6. An apparatus comprising:
 means for receiving digital video content; 
 means for receiving an indication of an object of an image of said digital video content; 
 means for receiving an indication of a grouping of said object in a frame sequence, wherein said grouping of said object is one of lines or pixels or a combination of lines and pixels, and wherein said grouping of said object defines a horizontal and vertical position of said object within said image; 
 means for intra-frame swapping said grouping of said object with a grouping of a neighboring object, wherein said neighboring object is a grouping of an object that follows said grouping of objects in time, and wherein said intra-frame swapping occurs in a forward direction with respect to time; 
 means for performing an object assignment for said forward time swap; 
 means for intra-frame swapping said grousing of said object with a grouping of a neighboring object, wherein said neighboring object is a grouping of an object that precedes said grouping of object in time, and wherein said intra-frame swapping occurs a backward direction with respect to time; and 
 means for performing an object assignment for said backward time swap, wherein said forward time swap of objects occurs for half of a pre-determined time interval and said backward time swap occurs for half of said pre-determined time interval. 
 
     
     
       7. The apparatus according to  claim 6 , further comprising means for storing each non-sequential generated frame of digital video content. 
     
     
       8. The apparatus according to  claim 6 , wherein said forward time swap occurs for 0.5 seconds of a 1.0 second interval and said backward time swap occurs for 0.5 seconds of said 1.0 second interval and said forward time swapping and said backward time swapping continue for the duration of the digital video content. 
     
     
       9. The apparatus according to  claim 6 , wherein said received digital video content is sequential. 
     
     
       10. The apparatus according to  claim 6 , wherein said means for backward swapping in time and said means for forward swapping in time cause flicker in a recording of said digital video content.